How to Deploy Tomcat on k8s
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k8s部署tomcat
Deployment
root@k8s-master ~]# cat tomcat.yml
apiVersion: apps/v1
kind: Deployment
metadata:
name: tomcat-deployment
labels:
app: tomcat
spec:
replicas: 3
selector:
matchLabels:
app: tomcat
template:
metadata:
labels:
app: tomcat
spec:
containers:
- name: tomcat
image: tomcat:latest
ports:
- containerPort: 8080
#run
[root@k8s-master ~]# kubectl apply -f tomcat.yml
deployment.apps/tomcat-deployment created
具体Deployment编写细节请参考以下地址： https://kubernetes.io/zh/docs/concepts/workloads/controllers/deployment/
查看 和状态
kubectl get deployments
NAME READY UP-TO-DATE AVAILABLE AGE
tomcat-deployment 3/3 3 3 3m29s
[root@k8s-master ~]# kubectl get pods -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
myweb-j78ct 1/1 Running 1 45h 10.244.1.5 k8s-node1 <none> <none>
myweb-vhxx9 1/1 Running 1 45h 10.244.2.3 k8s-node2 <none> <none>
tomcat-deployment-84ff9bf6b4-2f5cc 1/1 Running 0 3m49s 10.244.2.5 k8s-node2 <none> <none>
tomcat-deployment-84ff9bf6b4-7g26m 1/1 Running 0 3m49s 10.244.0.11 k8s-master <none> <none>
tomcat-deployment-84ff9bf6b4-qptr7 1/1 Running 0 3m49s 10.244.1.6 k8s-node1 <none> <none>
[root@k8s-master ~]# curl 10.244.1.6:8080
<!doctype html><html lang="en"><head><title>HTTP Status 404 – Not Found</title><style type="text/css">body {font-family:Tahoma,Arial,sans-serif;} h1, h2, h3, b {color:white;background-color:#525D76;} h1 {font-size:22px;} h2 {font-size:16px;} h3 {font-size:14px;} p {font-size:12px;} a {color:black;} .line {height:1px;background-color:#525D76;border:none;}</style></head><body><h1>HTTP Status 404 – Not Found</h1><hr class="line" /><p><b>Type</b> Status Report</p><p><b>Description</b> The origin server did not find a current representation for the target resource or is
